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© 2026 SHAYA LOWENSTEIN · LYON STAHL INVESTMENT REAL ESTATE830 S PACIFIC COAST HWY, SUITE D-200, EL SEGUNDO, CA 90245SHAYA@LYONSTAHL.COM · DRE #01942326
BUILDINGS/31717 RIDGE ROUTE RD
/// BUILDING FILE · ROLL 2025

31717 RIDGE ROUTE RD.

Castaic, CA 91384 · APN 2865-008-027

/// WHERE DO WE REACH YOU?

ONE EMAIL, USED TO KEEP THIS LIST AND TO TELL YOU IF A WATCHED BUILDING LISTS OR SELLS. UNSUBSCRIBE ANY TIME.

UNITS

30

BUILDING SF

26,026

SF / UNIT

868

YEAR BUILT

1979

BEDROOMS

46

BATHROOMS

46

USE · CODE 0501

5+ UNITS

/// ASSESSED VALUE
LAND$310,876
IMPROVEMENTS$2,049,515
TOTAL$2,360,391
LAND BASE YEAR1980
OWNERSHIP TENUREAPPROX. 46 YEARS

PROP 13 ASSESSED VALUES — USUALLY WELL BELOW MARKET ON LONG-HELD BUILDINGS.

/// LAST TRANSFER
RECORDEDJAN 9, 2009

No market sale detected on this parcel since 2021. The last recorded transfer may have been a refinance, trust move, or family transfer that didn't reset the Prop 13 base.

/// RENT CONTROL

LIKELY UNDER AB 1482 STATE CAP (5% + CPI, MAX 10%)

Outside LA RSO coverage on these records — most California multifamily over 15 years old falls under the AB 1482 statewide cap of 5% plus CPI, never more than 10% per year.

AB 1482 VS RSO →INFERRED FROM PUBLIC RECORDS — VERIFY WITH LAHD / ZIMAS BEFORE RELYING ON IT.
/// ZIP 91384

Recent sales nearby.

ADDRESSSOLDEST. PRICEEST. $/UNITUNITS
30160 SAN MARTINEZ RD→FEB 2024EST.$550,000$275,000UNITS230227 HASLEY CANYON RD→SEP 2023EST.$545,265$272,632UNITS230432 HASLEY CANYON RD→APR 2023EST.$1,082,645$541,323UNITS230950 GILMOUR ST→MAR 2023EST.$2,050,000$1,025,000UNITS227500 VIOLIN CANYON RD→JUL 2022EST.$1,400,000$116,667UNITS1229122 KENINGSTON RD→JUL 2022EST.$575,000$287,500UNITS231701 RIDGE ROUTE RD→SEP 2021EST.$5,750,000$302,632UNITS1931701 RIDGE ROUTE RD→SEP 2021EST.$3,999,999$285,714UNITS14

PRICES ESTIMATED FROM ASSESSOR REASSESSMENT AT SALE (ASSESSED VALUE DEFLATED 2%/YR) — NOT VERIFIED CLOSING PRICES.

/// COMPARE

Buildings like this one.

ON RIDGE ROUTE RD · ZIP 91384

31657 RIDGE ROUTE RD→84 UNITS · BUILT 1991 · 5+ UNITS31701 RIDGE ROUTE RD→14 UNITS · BUILT 1988 · 5+ UNITS31701 RIDGE ROUTE RD→19 UNITS · BUILT 1963 · 5+ UNITS31737 RIDGE ROUTE RD→46 UNITS · BUILT 1984 · 5+ UNITS31744 RIDGE ROUTE RD→10 UNITS · BUILT 1989 · 5+ UNITS

SIMILAR SIZE AND ERA IN 91384

27614 VIOLIN CANYON RD→22 UNITS · BUILT 1981 · 18,816 SF
EVERY BUILDING IN 91384 →
/// COMMON QUESTIONS · 31717 RIDGE ROUTE RD

The short answers.

Is 31717 Ridge Route Rd rent controlled?

Outside LA RSO coverage on these records — most California multifamily over 15 years old falls under the AB 1482 statewide cap of 5% plus CPI, never more than 10% per year. This is an inference from public assessor records, not a determination — confirm the certificate of occupancy date with the LA Housing Department or ZIMAS before you rely on it for pricing or notices.

How many units does 31717 Ridge Route Rd have?

County records list 30 units at 31717 Ridge Route Rd, classified as 5+ units across 26,026 square feet of building area, averaging about 868 square feet per unit. Unit counts on the roll can lag permitted conversions and unpermitted additions in both directions.

When was 31717 Ridge Route Rd built?

The assessor roll gives a build year of 1979, which is after the October 1978 RSO cutoff. Age drives more than character here: it sets rent-cap exposure, seismic retrofit obligations, and what a lender will underwrite.

When did 31717 Ridge Route Rd last change hands?

The most recent transfer on the roll was recorded January 2009. Not every recorded transfer is a market sale — refinances, trust transfers, and family conveyances all appear in the same field, and those do not reset the assessed value.

What is 31717 Ridge Route Rd assessed at, and is that what it is worth?

The current assessed value is $2,360,391 ($310,876 land, $2,049,515 improvements). Assessed value is not market value. Under Proposition 13 it resets only on a change of ownership and then climbs about 2% a year, so a long-held building is often assessed far below what it would trade for — and this one has held its base year for roughly 46 years.

Would the owner of 31717 Ridge Route Rd face a big tax bill on a sale?

Possibly. A base year going back roughly 46 years usually means a low tax basis, and a low basis means a large taxable gain on a straight sale — capital gains plus depreciation recapture, with California taxing gains at ordinary income rates. It is also why long-held buildings so often sell through a 1031 exchange instead, or pass through an estate for the step-up in basis.

How do I find out what 31717 Ridge Route Rd would sell for today?

Public records give you the frame — units, size, age, assessed value, when it last traded — but pricing needs in-place rents, expenses, and the condition of the units, none of which appear in county data. A broker valuation puts closed comps and a rent survey against the actual rent roll. Shaya Lowenstein does that free for LA multifamily owners, typically within 48 hours, with no obligation to list.

/// OWNER READING
WHAT IS MY BUILDING WORTH? →SELLING WITH TENANTS IN PLACE →HOW LA RSO WORKS →

Own this building?

FREE, CONFIDENTIAL VALUATION FROM CLOSED COMPS — 48H TURNAROUND.

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